perf tools: Allow sorting by symbol size

Add new sort key 'symbol_size' to allow user to sort by symbol size, or
(more usefully) display the symbol size using --fields=...,symbol_size.

Committer note:

Testing it together with the recently added -q, to remove the headers,
and using the '+' sign with -s, to add the symbol_size sort order to
the default, which is '-s/--sort comm,dso,symbol':

  # perf report -q -s +symbol_size | head -10
  10.39%  swapper       [kernel.vmlinux] [k] intel_idle               270
   3.45%  swapper       [kernel.vmlinux] [k] update_blocked_averages 1546
   2.61%  swapper       [kernel.vmlinux] [k] update_load_avg         1292
   2.36%  swapper       [kernel.vmlinux] [k] update_cfs_shares        240
   1.83%  swapper       [kernel.vmlinux] [k] __hrtimer_run_queues     606
   1.74%  swapper       [kernel.vmlinux] [k] update_cfs_rq_load_avg. 1187
   1.66%  swapper       [kernel.vmlinux] [k] apic_timer_interrupt     152
   1.60%  CPU 0/KVM     [kvm]            [k] kvm_set_msr_common      3046
   1.60%  gnome-shell   libglib-2.0.so.0 [.] g_slist_find              37
   1.46%  gnome-termina libglib-2.0.so.0 [.] g_hash_table_lookup      370
  #

Signed-off-by: Charles Baylis <charles.baylis@linaro.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1487943176-13840-1-git-send-email-charles.baylis@linaro.org
[ Use symbol__size(), remove needless %lld + (long long) casting ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Charles Baylis 2017-02-24 13:32:56 +00:00 committed by Arnaldo Carvalho de Melo
parent 4738ca30b4
commit 7768f8dada
4 changed files with 44 additions and 0 deletions

View File

@ -80,6 +80,7 @@ OPTIONS
- pid: command and tid of the task
- dso: name of library or module executed at the time of sample
- symbol: name of function executed at the time of sample
- symbol_size: size of function executed at the time of sample
- parent: name of function matched to the parent regex filter. Unmatched
entries are displayed as "[other]".
- cpu: cpu number the task ran at the time of sample

View File

@ -57,6 +57,7 @@ enum hist_column {
HISTC_SRCLINE_FROM,
HISTC_SRCLINE_TO,
HISTC_TRACE,
HISTC_SYM_SIZE,
HISTC_NR_COLS, /* Last entry */
};

View File

@ -1396,6 +1396,46 @@ struct sort_entry sort_transaction = {
.se_width_idx = HISTC_TRANSACTION,
};
/* --sort symbol_size */
static int64_t _sort__sym_size_cmp(struct symbol *sym_l, struct symbol *sym_r)
{
int64_t size_l = sym_l != NULL ? symbol__size(sym_l) : 0;
int64_t size_r = sym_r != NULL ? symbol__size(sym_r) : 0;
return size_l < size_r ? -1 :
size_l == size_r ? 0 : 1;
}
static int64_t
sort__sym_size_cmp(struct hist_entry *left, struct hist_entry *right)
{
return _sort__sym_size_cmp(right->ms.sym, left->ms.sym);
}
static int _hist_entry__sym_size_snprintf(struct symbol *sym, char *bf,
size_t bf_size, unsigned int width)
{
if (sym)
return repsep_snprintf(bf, bf_size, "%*d", width, symbol__size(sym));
return repsep_snprintf(bf, bf_size, "%*s", width, "unknown");
}
static int hist_entry__sym_size_snprintf(struct hist_entry *he, char *bf,
size_t size, unsigned int width)
{
return _hist_entry__sym_size_snprintf(he->ms.sym, bf, size, width);
}
struct sort_entry sort_sym_size = {
.se_header = "Symbol size",
.se_cmp = sort__sym_size_cmp,
.se_snprintf = hist_entry__sym_size_snprintf,
.se_width_idx = HISTC_SYM_SIZE,
};
struct sort_dimension {
const char *name;
struct sort_entry *entry;
@ -1418,6 +1458,7 @@ static struct sort_dimension common_sort_dimensions[] = {
DIM(SORT_GLOBAL_WEIGHT, "weight", sort_global_weight),
DIM(SORT_TRANSACTION, "transaction", sort_transaction),
DIM(SORT_TRACE, "trace", sort_trace),
DIM(SORT_SYM_SIZE, "symbol_size", sort_sym_size),
};
#undef DIM

View File

@ -211,6 +211,7 @@ enum sort_type {
SORT_GLOBAL_WEIGHT,
SORT_TRANSACTION,
SORT_TRACE,
SORT_SYM_SIZE,
/* branch stack specific sort keys */
__SORT_BRANCH_STACK,